What can we learn about the ‘international’ through the ‘transnational’? This article investigates transnational spaces and practices in the context of international law and their transformative influence on our understanding of the international. I argue that the relationship between the transnational and the international is not dichotomous, but an expression of the shifting location of power and authority in social relations across scales. The article contributes to this special issue by tracing dynamics of actualisation and reification of the international in various literatures. Reviewing uses of the ‘transnational’ in law and International Relations, I first show how the concept was used to unsettle the reason of state that defines bo...